The problem is not that creativity has become the preserve of the few. The problem is people have stopped regarding formal education as a means not just to acquisition of a certificate for earning income, but also a means to acquisition of knowledge (ability or capacity) and skills.
Without a foundation of knowledge, skills are at their most mundane realizations, and ability is constrained. Without knowledge then, creativity is an unlikely realization.
If only 1% of the population are willing to put in effort to acquire knowledge, only 1% of the population will be creative. We cannot wish creativity on people. Creativity must be acquired at price of knowledge. This is what Einstein meant when he declared genius is 90% plus sheer grit and hard work. Without knowledge even the most brilliant mind appears no better than the most average mind. If Einstein lacked mathematical skills, he could envision E=mc squared in his mind yet lack the knowledge — ability, skills, and awareness of deficiency of a proof in physics literature — to demonstrate the intuition in his mind.
Knowledge is power for creativity. Only those willing to pay the price (opportunity cost) for its acquisition can acquire the capacity for creativity.